Trichloroethane
AKA “1, 1-TRICHLOROETHANE, Methylchloroform, 71-55-6, Chlorothene, Cleanite, Inhibisol, Chlorothene NU, Chlorothene VG, Aerothene TT, alpha-T
Ingredient
Ingredient Facts
Trichloroethane
AKA: 1, 1-TRICHLOROETHANE, Methylchloroform, 71-55-6, Chlorothene, Cleanite, Inhibisol, Chlorothene NU, Chlorothene VG, Aerothene TT, Alpha-T
Ingredient · Solvent · EWG: 4
Synthetic
Solvent
Not Clean
1,1,1-Trichloroethane; Methyl chloroform
Solubility less than 1 mg/mL at 68 °F (NTP, 1992)
Formula
C2H3Cl3
Mol. Weight
133.40
CAS #
71-55-6
Form
Liquid
State
1,1,1-trichloroethane appears as a colorless liquid with a sweet, pleasant odor. May irritate skin, eyes and mucous membranes. In high concentrations the vapors may have a narcotic effect. Nonflammabl
See origin →
Functions
Solvent
Dissolves other ingredients so they distribute evenly in the formula. Often the invisible "base" everything else is mixed into.
Dissolves Ingredients
Fights Bacteria
Locks In Moisture
Dissolves other ingredients
Traditional Use
A synthetic solvent developed in the early 20th century. Used in cosmetics and personal care products from the 1950s-1970s as a propellant and solvent before being phased out due to ozone layer concerns.
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
No
EWG
4
CIR
Safe as used
Pregnancy
No
CIR Safety Findings
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUpermitted
JAPANpermitted
CANADApermitted
Fragrance material review on dihydro-alpha-terpineol.
Bhatia SP, McGinty D, Letizia CS, Api AM
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 2008
Final Report on the Safety Assessment of Trichloroethane
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
Trichloroethane
European Commission
EU Cosmetic Ingredient Database (CosIng)
Uptake and bioconversion of alpha-tocopheryl acetate to a...
E P Norkus, G F Bryce, H N Bhagavan
Photochemistry and photobiology, 1993
Uptake and bioconversion of alpha-tocopheryl acetate to a...
E P Norkus, G F Bryce, H N Bhagavan
Photochemistry and photobiology, 1993
Uptake and bioconversion of alpha-tocopheryl acetate to a...
E P Norkus, G F Bryce, H N Bhagavan
Photochemistry and photobiology, 1993
Investigations on metabolism and carcinogenicity of 1,1,2-trichloroethane.
Norpoth K, Heger M, Müller G, Mohtashamipur E, Kemena A et al.
Journal of cancer research and clinical oncology, 1988
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR